alloxazine

noun
al·​lox·​azine | \ ə-ˈläk-sə-ˌzēn How to pronounce alloxazine (audio) \

Medical Definition of alloxazine

: either of two acidic compounds C10H6N4O2 containing a pyrimidine ring:
a : a grayish green powder obtained by reaction of alloxan with the ortho form of phenylenediamine

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